Turkish Prime Minister Ahmet Davutoglu has said some 30,000 Syrians fleeing a Russia-backed government offensive in the northern region of Aleppo have amassed at the border with Turkey.

Speaking on February 8 at a joint press conference with German Chancellor Angela Merkel in Ankara, Davutoglu said Turkey would admit the displaced Syrians "when necessary," adding that Russia's air assault should not be tolerated with the idea that Turkey will accept the refugees.

Davutoglu said Turkey and Germany have agreed on a joint diplomatic initiative to stop the offensive against Aleppo.

He also said Turkey would inform Brussels next week on the projects it plans after receiving 3 billion euros ($3.3 billion) in funds from the European Union aimed at curbing the flow of migrants to Europe via Turkey.